Pick as many books up to a 2 pound media mail rate as you can...probably only 2 for 1 if you choose hardcovers, but easily 4 for 1 or even 5 for 1 if you stick to paperbacks. If you are looking at children's books, you could go as high as 6 for 1...order one as usual, and then PM with your list of other choices and I will weigh and give you as many as I can up to the 2 lb limit. First come, first serve. Sale is on until June 5th. Thanks for looking!